Build & Destroy with Physics

Physics are fun. Here are two quick ideas for two-player physics fun:

1. Sky Tower: the purpose of this game is to use a pile of blocks to build a skycraper reaching up to a certain height. The exact height may be based on the players' rating - the higher the rating, the higher they are required to reach.

Each player sees both his and the other player's screen. The screen contains a pile of blocks and a line indicating the height to reach. The players drag and drop their blocks, placing them one atop the other. The first player to have a balanced structure standing for five seconds above the line, wins.

2. Castle Battle: the goal here is the other way around - instead of constructing, each player throws blocks towards the opponent's castle with the aim of inflicting maximum damage,

The game is built of 2-3 rounds, with the first to win 2 rounds the overall winner. Each of the players has a block castle standing at opposite edges of the game screen. The castle structure is different for each round, but the same for both players.

Players get one block at a time to throw at the rival castle. A red line, a little beyond their own castle, indicates their control zone - they cannot drag the block beyond that line. Throws are handled by holding and dragging the block. When released, the block keeps on flying depending on last speed and trajectory.

Hopefuly the block will hit the enemy structure with the force and positioning to send blocks flying. A damage algorithm measures the damage done by each side. There are different algorithms possible, for example, depending on the current distance of each brick from its original position in the castle and on the current height of the top blocks of each castle.

The player to have caused more damage in 30 seconds is the round winner.